In computer networking and computer science, bandwidth, network bandwidth, data bandwidth, or digital bandwidth is a measure of available or consumed data communication resources expressed in bits/second or multiples of it (kilobits/s, megabits/s etc.).

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Random gigabit bandwidth with my Samba fileserver

I own a personnal Fileserver, build on an AMD X2 platform, with an intel gigabit CT network adapter, running debian 6.0. I've built a raid5 (2To x 3), shared by samba 3.5.6 From my desktop computer (...
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How can I limit a users bandwidth in Windows Server 2008 R2 [closed]

We have a user that likes to download movies with torrents in our office and it just kills the overall network performance. Unfortunately we need this user and don't want to confront him directly ...
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4answers
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How can I calculate the 95-percentile bandwidth usage of a network device?

My provider is billing my bandwidth using the 95-percentile method. I know what it is in principle (take measurements, throw the top 5% away and use the remaining highest as result). The question ...
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Monitor Internet bandwidth by IP in a LAN environment?

I am new to networking so pardon if this is a stupid question. I want to see how my users use the internet bandwidth. I have around 50 Users in the network and I am using a checkpoint edge series ...
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How can I report bandwidth usage over x days, broken down by port and protocol?

I need to generate reports showing bandwidth usage broken down by port and protocol, based on all data sent/received over the last x days, in a fairly simple and secure way. Storing full traffic ...
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293 views

Is there an effective way to monitor the load on each switch?

We have about 200 IP phones in our building and I realize we got more complaint about the phone quality after we switched our internet from 50Mbps to 200Mbps Up/Down. I know there's a possibility ...
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Determine what machine/device is consuming bandwidth

I sometimes help a small office with a few issues. About two months ago, they were complaining of poor internet performance. Long story short, I found one person running Carbonite on a Mac that was ...
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openvpn TCP/UDP slow SSH/SMB performance

I have question about strange behavior of my openVPN configuration on Debian lenny. I have 2 server configs (one proto tcp-server based and one proto udp based). ISP bandwidth is 7Mbit/7Mbit. When I ...
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Would a VPN allow me to get around the monthly data cap set by my ISP? [closed]

My total data allowed without being charged extra is 50gb during 8am-12am and unlimited overnight from 12am-8am. I have to watch how much HD streaming I do and mass downloading because of this. Thanks ...
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Bandwidth limits for Amazon EC2

I have a micro instance on Amazon EC2 cloud. Also the instance is small and it has vary low CPU and EAM usage but it generates a lot of content, so it can be considered like a web server serving ...
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693 views

Monitor remote Ubuntu server's bandwidth usage using Nagios?

I recently setup Nagios for the first time and I love it so far. Figuring out how to better organize all those config files took a while, but once I had a better understanding of everything I'm really ...
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376 views

How to mark outbound FTP traffic with iptables?

i have a user called "testuser" in my debian system and i want to mark the FTP traffic going from testuser's account how can i do that? i use following commands to mark all the outgoing traffic for "...
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how to limit upload bandwidth per user in linux?

Can anyone provide the tc command to limit upload bandwidth per user in Debian Lenny? I found that to mark packets per user with iptables I can use the following command iptables -t mangle -A OUTPUT ...
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Limiting bandwidth on internal interface on Linux gateway

I am responsible for a Linux-based (it runs Debian) branch office router that takes a single high-speed Internet connection (eth2) and turns it into about 20 internal networks, each with a seperate ...
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How to calculate bandwidth limits per user on WiFi network

A typical 802.11g access point can provide around 25 Mbps of bandwidth. How is the bandwidth shared among the users? Furthermore, how many users can be served by a single access point using 802.11g ...
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673 views

Why does nginx reverse proxy incoming bandwidth increase and surpass outgoing by far when proxy_buffering is enabled?

This is my current configuraiton... proxy_buffering on; proxy_buffer_size 32k; proxy_buffers 128 32k; proxy_send_timeout 20; proxy_read_timeout 20; #proxy_max_temp_file_size 1m; proxy_temp_path /dev/...
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758 views

Is ceph usable with only 100Mbps bandwidth between nodes? [closed]

I haven't great hardware, but my requirements are low, I would like to start using ceph so as to abstract filesystem location and allow potential easy scaling to bigger hardware in an hypothetical ...
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501 views

What are the different classes of Internet Connection and how do they differ?

I'm looking for the technical differences between consumer and professional Internet connections. By "professional" I mean: The kind you can get at a datacenter The kind you can get at an office ...
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3answers
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Why are the prices for broadband bandwidth at data centers much higher than consumer/small business offerings? [closed]

The prices for broadband bandwidth at data centers are sometimes as much as 10x higher than for a typical small business/consumer connection, at least where I live. Now, I understand those are two ...
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Is there a linux terminal command that lets you see the amount of data coming in to your tcp connections in real time?

It would be something similar to top, where you see your cpu processes in real time. I'm not looking for a GUI like Wireshark to do it.
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682 views

Linux - Get Outbound/Inbound Traffic by IP address

I am hosting a website and I found that the traffic on my server is quite high. My Linux server is behind a router in a DMZ. I would like to see the traffic made on my Linux box on the eth0 interface,...
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516 views

Measure Upload Speed between a client and our server

We host a SAAS application specially customized for multiple clients. For one customer in particular -- they are reporting sporadic performance issues from various locations on their network, in ...
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810 views

when a hosting mentions 100mbps bandwidth, what does it mean? [closed]

Most of web hostings say 100mbps bandwith, does it mean 100mbps upload and download combined ? what is the share between upload speed and download ? is 50 50 ? or 40 60 ? or etc ? Can anyone explain ...
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587 views

Tool to analyze the real time traffic in Windows XP SP2 [closed]

My client machine/(s) is/(are) Windows XP SP2. I can’t effort every time to have physical access to my server machine. To analyze the real time traffic and bandwidth between client and server machine, ...
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lxc bandwidth control using tc

I am trying to restrict bandwidth inside my containers. I have tried using the following commands , But I think it is not getting effective. cd /sys/fs/cgroup/net_cls/ echo 0x1001 > A/net_cls....
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What buffer size should I use to maximize disk I/O bandwidth? (16Kb, 32Kb, 64Kb, etc.) [closed]

I am trying to write a file as fast as I can through a buffered FileChannel similar to a BufferedOutputStream. I am wondering what is the optimum chunk of data I should use per write call to maximize ...
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456 views

Monitoring outgoing bandwidth of application

I currently have a VPS that is consuming a ton of outgoing bandwidth and I am trying to drill down to where this may be coming from. Does anyone know of a logical way to go about finding out which ...
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1answer
2k views

How to limit the download speed after first N mb in Squid?

In my network, when someone is downloading big files, the internet speed is going down for everyone else. So what I want to do is, when someone starts downloading a file, he will download first 5 ...
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577 views

Does RDS on Windows Server 2008 R2 have a default max bandwidth per user?

Is there a default max bandwidth limit on users of RDS Host in Windows Server 2008 R2?
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386 views

iptables/haproxy limit packets per second

Is it possible to limit incoming tcp packets per second (or bytes per second) with iptables or haproxy? I have found many examples but none of them seem to work.
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220 views

Bandwidths relation to data rate?

What is the relationship between bandwidth and data rate? I know bandwidth is usually just the difference betweent he highest and lowest frequencies but then how does data rate come into play? What ...
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107 views

Host data transfer limit calculations and network protocol headers

OK, this might be a really stupid question, but... I'm building a web app that utilises websockets. There's fairly rapid messaging going on, so I've been taking a look at the network traffic with ...
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How to distribute my DSL bandwidth between users?

I am very new to networking and don't have enough knowledge so please forgive me! We have a DSL connection which is used by more than one user. All the users are using MS Windows 7. Can we allocate ...
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705 views

Bandwidth monitoring with iptables for non-router machine

I came across this tutorial here that describes how to monitor bandwidth using iptables. I wanted to adapt it for a non-router machine, so I want to know how much data is going in/coming out and not ...
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What does it mean - to get billed to the 95th percentile at $x.xx per meg?

I got a quote from a colo, saying "I could do 3U, the power and 20 megs burstable to 100 for $250 a month with each additional meg billed to the 95th percentile at 6.50 per meg..so you would ...
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how to measure IP bandwidth in pass through mode in linux?

I want to measure the IP bandwidth in pass through mode. Please find the attached picture for configuration and my question also. If there is no solution with OpenWRT, I need any alternative ...
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Find whats using all my servers bandwidth

TLDR: how can I dig deeper into my Mac mini OSX server to determine what processes are consuming so much bandwidth, or where all the inbound traffic is coming from? Resource caching is on, all ...
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Windows DNS consumes loads of bandwidth

I have some problems with my two AD/DNS servers for my hosted Exchange setup, as they suddently began to consume large amounts of bandwidth (~10mbit each), which I think is really strange, as they are ...
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Bandwidth and Speed monitoring software [closed]

I am looking to get some advice on what you guys think would be a good fit for my requirements. My goal is to find software which would monitor internet speed (UP/DOWN), ping times and more(possibly) ...
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squid proxy 2.7 limit bandwidth [closed]

I have a squid 2.7 proxy and i'm letting some friends use it for fun in school etc. However since i got a bandwidth limit on my vps that is hosting the proxy I need somehow to throttle the amount of ...
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75 views

Configure trickle to add guestOS

I want to configure Trickle to prioritize my bandwidth with an installed app on ubuntu, I understand the basic config: [ssh] Priority = 1 Time-Smoothing = 0.1 Length-Smoothing = 1 [www] Priority = 2 ...
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Storing pages with only client-side code in S3 over full EC2?

Question: Would storing pages in S3 with only client-side code reduce costs in comparison to hosting them in Amazon's EC2? Background: Right now I use a cms to manage all of my pages and users for a ...
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247 views

Bandwidth * Delay Product

I'm trying to calculate the bandwidth delay product between various hosts, and reading this wiki article, I am confused. From the acticle; Residential ADSL2+: 20 Mbit/s (from DSLAM to residential ...
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179 views

Linux Router - Share bandwidth per IPs with current active connections

We have a Linux machine running as a custom router, currently utilising Shorewall. This sits between our incoming internet connection and the internal LAN. What we would like to achieve is 'fair use'...
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How do I reserve bandwidth for rsync?

Currently nginx uses all my bandwidth. How do I leave some for rsync?
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How to limit bandwidth speed from a router for a devices on a network? [closed]

How to limit bandwidth speed from a router for a devices on a network ? There are several devices accessing the internet thru a wireless network. I cannot change settings directly on the client-...
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afp/smb transfers caps at 2 megabytes/sec, wireless N

I wanted to transfer files between two mac computers. The network is wireless-N and both computers have wireless-N modules in them. The problem is that when I transfer files between them, via file ...
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888 views

What is the maximum supported data rate for PCIe? [closed]

Given a particular generation and link width, how can I determine what the maximum bandwidth is? I've looked across the Internet and various unofficial sources appear to disagree on the numbers. ...
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Is there a linux command/tool that will provide end-to-end bandwidth information between local and external host?

CentOS 5.x At times, I've wanted to know what general bandwidth constraints exist between my servers and an external server that I don't have control over. Is there a linux command/tool that could ...
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Iperf bidirectional bandwidth measurement

Server side: # iperf -s ------------------------------------------------------------ Server listening on TCP port 5001 TCP window size: 85.3 KByte (default) -------------------------------------------...